Imran Rahman

New dinosaur species found in Portugal A new 125-million-year-old iguanodon species has been revealed by palaeontologists, with the publication of the study on the discovery in the international Journal of Systematic Paleontology.

A new 125-million-year-old iguanodon species has been discovered: 𝘾𝙖𝙧𝙞𝙤𝙘𝙚𝙘𝙪𝙨 𝙗𝙤𝙘𝙖𝙜𝙚𝙞 🦖 a new basal hadrosauroid from the Lower Cretaceous of Portugal

buff.ly/Y92lRTR

Read the full study by Bertozzo et al. in JSP: buff.ly/FMnyy1m

#Dinosaurs #PaleoSky #NaturalHistory #NHM #JSP #Fossils

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New Paper by Parry et al., reinterpreting the oldest diverse #jellyfish fauna as sessile polypoid dinomischids 🪼

These findings significantly expand the temporal and geographical range of dinomischids, elucidating their morphological and taphonomic variation.

buff.ly/ERV7P3C

#PaleoSky #Fossils

A new paper by Bertozzo et al. describes 𝘾𝙖𝙧𝙞𝙤𝙘𝙚𝙘𝙪𝙨 𝙗𝙤𝙘𝙖𝙜𝙚𝙞, a basal hadrosauroid from the Lower Cretaceous of Portugal 🦖 The most complete iguanodontian skull specimen found in Portugal, offers insights into cranial development and anatomy during hadrosauroid evolution: buff.ly/FMnyy1m #PaleoSky

Today new publication has been released in @journalsystpal.bsky.social
We are proud to present you Cariocecus bocagei, a new hadrosauroid from the Papo Seco Formation (Barremian, Early K) of Portugal.
Come with me in this post series to learn more about it! 1/x

Did you know we are one of two journals produced by the Natural History Museum London. We champion the importance of collections-based systematics and our papers cover fossil species from across the tree of life, substantially contributing to the systematics of extinct taxa. So, why publish with us?

Salps, a clear, gelatinous ocean animal, use jet propulsion to glide through the water without leaving insight into how they move.

With harmless green dye, former MIT-WHOI Joint Program graduate student Kelly Sutherland was able to study salp locomotion at the Liquid Jungle Lab in Panama.

Assessing the impact of character evolution models on phylogenetic and macroevolutionary inferences from fossil data Understanding the evolution and phylogenetic distribution of morphologic traits is fundamental to macroevolutionary research. Despite decades of major advances and key insights from molecular systemat...

New updated preprint! Many thanks to reviewers for their suggestions and helpful advice for improving our manuscript. Check it out if you're interested in fossils, phylogenies, and modeling morphologic evolution! 🧪

a close up of a fly 's head with a blurred background . ALT: a close up of a fly 's head with a blurred background .

🚨 Hiring! We are looking for a postdoctoral researcher with expertise in computational fluid dynamics and structural simulations to investigate biomechanics and mechanosensory feedback in insect flight.

Extreme agility ✔️
Morphological computing ✔️
Meshes! ✔️

jobs.rvc.ac.uk/vacancy.aspx...

New paper out in the Journal of Systematic Palaeontology 🦖 Investigating the phylogenetic relationships of Unenlagiidae among Paraves (Dinosauria) by M. Motta et al. (2025)

Read the full study here: buff.ly/0ytggCG

#Dinosaurs #Fossil #NHM #NaturalHistory #Biodiversity

Did you know.. Molluscs are the second most diverse phylum and possibly the most disparate! 🐚🦪🐌🐙🦑

A recent study by Karapunar et al. (2024) documents the phylogeny of Pleurotomariidae, the longest-living gastropod group, comparing different shell characters: buff.ly/2pEof6e @spissatella.bsky.social

Its #FossilFriday - check out the snout (lateral view) of 𝙋𝙨𝙚𝙪𝙙𝙝𝙚𝙨𝙥𝙚𝙧𝙤𝙨𝙪𝙘𝙝𝙪𝙨 𝙟𝙖𝙘𝙝𝙖𝙡𝙚𝙧𝙞, from the Los Colorados Formation (Norian), Argentina. This is the only specimen of one of the best known early non-crocodyliform crocodylomorphs.

Read more: buff.ly/h42ORcw #MindBlown #Fossils

Hi all, me, @richardjbutler.bsky.social and the amazing UK-US-Moroccan team are delighted to announce that.. we have a new specimen of Spicomellus AND IT'S WAY WEIRDER AND WAY COOLER THAN WE EVER IMAGINED!!

That’s a wrap on my two months @thepalass.bsky.social research internship at the NHM 🦖! Spent two months working on some awesome techniques (bet you can’t guess by the photos 😂) with @tweetisaurus.bsky.social and @imranrahman.bsky.social! Grateful for the staff involved in making this happen.

#FossilFriday 🦎 The right forelimb of 𝘾𝙖𝙡𝙖𝙣𝙜𝙪𝙗𝙖𝙣 𝙖𝙡𝙖𝙢𝙤𝙞 - a fossil lizard from the Early Cretaceous Crato Formation Brazil.

This specimen replaces the original 𝘊. 𝘢𝘭𝘢𝘮𝘰𝘪 holotype, which was lost in 2018 when a fire destroyed the National Museum of Brazil collections.

Read more: buff.ly/BCtn152

Meet our brilliant team of Associate Editors!

Dr Katie Collins is a molluscan palaeobiologist 🐚 specializing in bivalve macroevolution and the morphometrics of conchiferan molluscs.. and is a general measurement nerd!
Read more about her research: buff.ly/GDH0Obv

@spissatella.bsky.social #NHM

For #FossilFriday - the #skull of *Prosqualodon australis*, an #extinct relative of toothed whales like dolphins and porpoises, which was recovered from the Miocene of Argentina 🦴

Read the full article by Gaetán et al. (2025) in JSP: buff.ly/FkwovSK

#Dinosaurs #NaturalHistory #Systematics #NHM

Around this time in 1811, 12-year-old Mary Anning began excavating the first correctly identified ichthyosaur. Her brother found the skull and she uncovered the skeleton, later named a 𝘛𝘦𝘮𝘯𝘰𝘥𝘰𝘯𝘵𝘰𝘴𝘢𝘶𝘳𝘶𝘴

Read about the phylogeny of ichthyosaurs by B.C. Moon (2017): buff.ly/4IC8Cz8
#NaturalHistory

A new study in JSP reports the first record of 𝘗𝘭𝘪𝘰𝘵𝘳𝘢𝘨𝘶𝘴 (Bovidae) from the Early Pleistocene of eastern Asia. Phylogenetic results place it within Caprini, alongside modern goats, sheep and muskoxen. Read the full study by Bai et al. (2025): buff.ly/UmeXcHQ

🦕 Did you know…

By the time 𝙏𝙮𝙧𝙖𝙣𝙣𝙤𝙨𝙖𝙪𝙧𝙪𝙨 𝙧𝙚𝙭 roamed the Earth, 𝙎𝙩𝙚𝙜𝙤𝙨𝙖𝙪𝙧𝙪𝙨 was already a fossil as it had been extinct for over 80 million years!

Read about the phylogeny of Stegosauria by Maidment et al. (2008): buff.ly/sxw3Qbx

@tweetisaurus.bsky.social #fossils #funfact #MindBlown #PaleoSky

For #FossilFriday have a look at the Late Cretaceous vertebrate remains of a Transylvanian Titanosaur and an anatomical record of the remains described by Diaz et al. (2025) in JSP.
Read the full study here: buff.ly/0eDwNJI

#PaleoSky #NHM #Dinosaur #Fossils #NaturalHistory #Giant #JSP #MindBlown

Prof. Susannah Maidment JSP Editor-in-Chief

Welcome to our new co-Editor-in-Chief Prof. Susannah Maidment

Susannah is a renowned expert on the palaeobiology of bird-hipped ‘ornithischian’ dinosaurs at the Natural History Museum, London

🦕Read about her amazing work: buff.ly/4AfhohB

@tweetisaurus.bsky.social #Fossils #PaleoSky #Dinosaurs

This is why giraffes are never known to have played soccer.

𝘖𝘳𝘦𝘢 𝘭𝘦𝘱𝘵𝘪𝘢 - An extinct Giraffid species from the Middle Miocene Chinji Formation of Pakistan, with the slenderest metatarsal of any known ruminants, represents the oldest definitive member of the giraffine lineage. Nikos Solounias & Maria Ríos (2025): buff.ly/LqW97Ky

#FossilFriday #PaleoSky #NHM

Artwork by Gabriel Ugueto

I am proud and grateful to present a dream project today in @nature.com www.nature.com/articles/s41...

Meet #Mirasaura grauvogeli, a #wonderreptilewith skin appendages that rival feathers and hairs, challenging our view of reptile #evolution🪶🦎

🌟Did you know..?

While modern echinoderms like starfish have five-fold symmetry, the fossils of extinct echinoderms exhibit very different types of symmetry!

Read about the 3D reconstruction of ctenocystoids, Rahmen and Clausen (2009): buff.ly/xN07qjx

@imranrahman.bsky.social #fossils #PaleoSky

I'll have more info in a few weeks when I get back from fieldwork but I'll be recruiting 2 graduate students to begin in 2026 (1 PhD, 1 MS). My lab investigates macroevolutionary dynamics using phylogenetic methods & the fossil record. Please share with students having strong research interests!

Millions of years ago during the Silurian period, the Sahara Desert was a shallow sea full of aquatic animals like crinoids. Don’t be fooled! Crinoids are commonly called "sea lilies" but they aren't plants! They are echinoderms, like starfish and sea urchins, and many species are still alive today!

Millions of years ago during the Silurian period, the Sahara Desert was a shallow sea full of aquatic animals like crinoids. Don’t be fooled! Crinoids are commonly called "sea lilies" but they aren't plants! They are echinoderms, like starfish and sea urchins, and many species are still alive today!

#FossilFriday - explore the stunning armoured plates of a 390-million-year-old placoderm fish fossil from Manitoba! 🐟
Image shows the central and postorbital plates of Elmosteus lundarensis gen. et comb. nov. Read the full study by Jobbins et al. (2025): buff.ly/g6sEO4A

#PaleoSky #Fossils #NHM

#TaxonomyTuesday

A new study by Sam Hyde Roberts et al. in the journal of Systematics and Biodiversity comprehensively assesses the herpetofauna of Sainte Luce, south-eastern Madagascar: A littoral treasure trove!

Read the article here: buff.ly/Uoivhnt

#Systematics #biodiversity #NaturalHistory

Meet our Editorial team at JSP!

Dr Imran Rahman is one of our co-Editors-in-Chief and a leading specialist in the palaeobiology and evolution of early echinoderms at the Natural History Museum, London

Read more about his fascinating work: buff.ly/poOpGLF

@imranrahman.bsky.social

#PaleoSky